mirror of git://gcc.gnu.org/git/gcc.git
38 lines
873 B
C
38 lines
873 B
C
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/* @(#)s_copysign.c 1.3 95/01/18 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunSoft, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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* copysign(double x, double y)
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* copysign(x,y) returns a value with the magnitude of x and
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* with the sign bit of y.
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*/
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#include "fdlibm.h"
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#ifndef _DOUBLE_IS_32BITS
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#ifdef __STDC__
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double copysign(double x, double y)
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#else
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double copysign(x,y)
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double x,y;
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#endif
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{
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uint32_t hx, hy;
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GET_HIGH_WORD(hx, x);
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GET_HIGH_WORD(hy, y);
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SET_HIGH_WORD(x, (hx&0x7fffffff)|(hy&0x80000000));
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return x;
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}
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#endif /* _DOUBLE_IS_32BITS */
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